Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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[DESCRIPTION]
[Invention Title]
HYDROPOWER GENERATOR
[Technical Field]
The present invention relates to a
hydropower generator, more particularly, to a hydropower
generator enabling electricity generation by a flow of fluid,
wherein a rotator rotates in the same direction by a
resistance force generated in a resistance plate regardless
of a flow direction of the fluid in the hydropower generator.
[Background Art]
Generation of electricity generally uses
hydroelectric power, tidal power, thermal power, nuclear
power, wind power, solar power, etc. and, in the case of
thermal power generation, nuclear power plants need not only
enormous consumption of energy and high technology for
operation, human resources, expensive high-tech equipment,
significant installation and maintenance costs, but also
involve problems of adverse effects wherein massive amounts
of deadly environmental pollutants are generated.
Therefore, in consideration of domestic conditions
wherein the country is a peninsula and is rich in
mountainous regions with variable wind, Korea has great
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interest in development of environmentally friendly, low-
carbon and renewable green energy using wind power or tidal
power.
Meanwhile, the conventional wind power devices mostly
installed and used in the art have adopted propeller type
rotation and are characterized in that a power transmitter
is mounted on the top end of a vertically-installed support
shaft, and a single rotary blade unit is installed on one
side of the power transmitter wherein this single rotary
blade unit consists of three or four blades radially
arranged at equal angle within a predetermined diameter and
has a structure of being mounted perpendicularly toward the
direction of blowing wind. The conventional wind power
generator having such a structure as described above is not
reasonable since only a single rotary blade unit is
vertically installed on the top end of the support shaft
such as a fan blade, and thus, a small amount of power
generation is expected only by rotation of the single rotary
blade unit. In order to increase power generation, the
afore-described structure should be installed in large
numbers in a large area, hence causing limitation in power
generation to be achieved, compared to enormous installation
site and investment costs.
Further, conventionally, a fixed position was
determined only by a force of pushing the resistance plate
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along water flow, which caused a problem that it is
difficult to fully utilize the pushing force if the
resistance plate is heavy.
Further, since a rotational direction may vary
according to a change in the direction of water flow, it was
difficult to actually operate a power generator.
[Disclosure]
[Technical Problem]
The present invention was conceived to solve the
above problems, and an object of the present invention is
to provide a hydropower generator wherein a resistance
plate is disposed in water and generates a resistance
force along a flow of the water while rotating a rotator,
and a generator is installed on the surface of water,
thereby enabling efficient management, control and
lifespan extension of facilities while achieving reduction
in installation costs.
Further, there is provided specific arrangement and
structure of the resistance plate that can rotate in the
same direction even though the direction of water flow is
changed.
[Technical Solution]
According to characteristics of the present
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invention to accomplish the above objects, there is
provided a hydropower generator for generating electricity
while rotating in a flow direction of fluid, which
includes: a central structure installed to stand upright
in water; a rotator installed on an outer circumference of
the central structure and having at least one resistance
plate coupled to the outer circumference; a rotational
ring provided between the central structure and the
rotator to allow the rotator to rotate around the central
structure; a speed changing unit ('transmission') which is
coupled to the rotator at one side of the transmission and
integrally rotates along with the rotator; and a generator
having a motor shaft coupled to the other side of the
transmission to generate energy by rotation of the motor
shaft, wherein the resistance plate is disposed in the
water and generates a resistance force along water flow
while rotating the rotator, simultaneously, thereby
generating energy by the generator, and wherein the
resistance plate is configured to be arranged to generate a
rotating force such that the rotator can rotate in the same
direction regardless of the direction of flow.
In order to attain the above operations, the
resistance plate may include: a plurality of rotary supports
formed in radial directions with respect to the rotator; and
a resistance plate rotatably coupled to one side of the
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rotary support, which is opposed to the rotator, by a hinge,
wherein the rotary support further includes a support part
to which the resistance plate is rotatably coupled and by
which the resistance plate is supported, wherein the
resistance plate receives a force of the fluid and generates
a rotating force in order to rotate the rotator wherein the
rotating force reaches maximum at an angle having 90 degrees
difference from a direction of flow ('the angle for maximum
rotating force') while reaching minimum at an angle having
180 degrees difference from the above angle for maximum
rotating force ('the angle for minimum rotating force'), and
wherein the resistance plate at the angle for maximum
rotating force is arranged in a direction perpendicular to
the direction of the flow rate, while the resistance plate
at the angle for minimum rotating force is arranged in a
direction parallel to the direction of the flow.
In the other words, a portion of the rotary support
stops rotation of the resistance plate to generate a
resistance force, and the resistance plate generates the
resistance force while rotating at one side of the rotary
support toward the center of the rotator, wherein the
resistance force reaches maximum when the resistance plate
is arranged to be superimposed on the rotary support,
thereby maximizing the rotating force.
At a position at which the rotating force is
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generated, the resistance plate is arranged to be
superimposed on the rotary support so that the rotary
support may become parallel to the resistance plate. On the
other hand, at a position at which the rotating force is not
generated, the resistance plate is arranged parallel to the
direction of flow so as to rotate the rotator due to a
deviation in rotating forces generated in the resistance
plate.
In another aspect of the present invention, the
resistance plate is rotatably coupled to one side of the
rotary support by a hinge to thus rotates depending upon the
direction of flow, wherein the rotating resistance plate at
an angle for maximum rotating force is arranged to be
superimposed on the rotary support and thus causes the
rotary support to be parallel to the resistance plate, while
the rotating resistance plate at angle for minimum rotating
force is arranged to be widened by 90 degrees from the
rotary support and thus causes the rotary support to be
perpendicular to the resistance plate.
In another aspect of the present invention, when
viewing the rotator in the direction of flow, if the
resistance plate and the rotary support are arranged to
provide the maximum rotating force at the left side, the
rotator may rotate in the clockwise direction, whereas, if
the resistance plate and the rotary support are arranged to
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provide the maximum rotating force at the right side, the
rotator may rotate in the counterclockwise direction.
That is to say, when viewing the rotator in the
direction of flow, if the resistance plate and the rotary
support are arranged such that rotation of the resistance
plate is stopped by the rotary support at the right side
relative to the rotator to thus generate the resistance
force (see FIGS. 5a and 5b), the rotator may rotate in the
counterclockwise direction. On the contrary, if the
resistance plate and the rotary support are arranged such
that rotation of the resistance plate is stopped by the
rotary support at the left side relative to the rotator to
thus generate the resistance force, the rotator may rotate
in the clockwise direction.
Further, the present invention may further include a
base member for supporting the rotator and the central
structure, wherein the rotator has a hollow cylindrical form
and receives a portion of the central structure therein,
wherein a cover part having a thru-hole through which the
central structure passes is formed on top of the rotator,
and wherein the central structure has a stepped part
projecting in the radial direction from the outer
circumference of the central structure such that the central
structure is spaced apart from the bottom of the cover part
of the rotator.
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In this case, the rotational ring provided between
the rotator and the central structure may include a
plurality of internal rolling rings with a multilayer
structure present between an inner circumference of the
rotator and an outer circumference of the central structure,
wherein the internal rolling rings are provided to support
the rotator, thereby enabling the rotator to rotate about a
center axis of the central structure.
In addition, the rotational ring may further include:
an upper rolling ring provided between the cover part of the
rotator and the stepped part of the central structure to
support an upper portion of the rotator; a lower rolling
ring provided between the base member and the bottom of the
rotator to support a lower portion of the rotator, wherein
both of the upper rolling ring and the lower rolling ring
may be provided together or either one thereof may be
selectively provided.
Further, the internal rolling ring may include: an
inner ring having a protrusion projecting from an inner
circumference of the inner ring; a rolling body provided on
an outer circumference of the inner ring; and an outer ring
that has an outer circumference in close contact with the
inner circumference of the rotator and is rotated around the
central structure while surrounding the rolling body,
wherein these respective components are provided in one or
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more numbers and are spaced apart in a length direction of
the central structure.
Further, a portion of the rotary support may stop
rotation of the resistance plate to thus generate a
resistance force (see FIGS. 5a and 5b), wherein a face
contacting with the resistance plate to stop the resistance
plate has a recess 240 formed in a concave or planar shape
in order to increase the resistance force, while the
opposite face may include a convex part 241 formed to
decrease the resistance force against fluid.
The recess 240 or the convex part 241 may be formed
in a straight or curved line (see FIGS. 5e or 5f).
Further, the hinge rotatably coupled to the
resistance plate may have a configuration wherein a single
hinge is disposed in the center of one end of the resistance
plate (see FIG. 5c) or is mounted on a bracket 182 extending
up and down from the end of the rotary support to support
top and bottom faces of the resistance plate (see FIG. 5a).
Moreover, the resistance plate may be in a curved
form having a wider width with increasing distance from
the hinge, so as to prevent foreign substances from
sticking to the resistance plate.
Further, the rotary support and the resistance plate
may be formed with at least one multilayer structure,
wherein the rotary support and the resistance plate are
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divided and mounted at equal angle of 360 degrees on each
layer, and the rotary support may be horizontally arranged
or inclined.
Herein, FIG. 1 illustrates a structure consisting of
three layers, wherein each layer is provided with two rotary
supports and two resistance plates, respectively. However,
the number of the layers can of course be altered.
In another aspect, the present invention may further
include a base member at the bottom end of the central
structure to support the central structure to stand upright.
Further, the central structure may include a guide
groove inserted in an up-and-down direction to have an outer
circumference and a fixing groove into which one side of the
guide groove is inserted. Further, the internal rolling
ring may move up and down by inserting the protrusion into
the guide groove, while being fixed by inserting the
protrusion into the fixing groove.
Also, the guide groove is formed to have a width
between both inner faces, which is increased as the guide
groove is more deeply inserted.
Moreover, in order to secure the internal rolling
ring coupled in the center of the rotator when the
protrusion is inserted into the fixing groove, a fixing rod
inserted into the guide groove may be further included.
Further, the lower rolling ring may include: a first
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support ring, a lower side of which is supported on the
bottom; a rolling body provided on top of the first support
ring; and a second support ring which supports the bottom of
the rotator while surrounding the rolling body, and rotates
around the central structure.
Alternatively, the upper rolling ring may include: a
first support ring which is supported at the stepped part of
the central structure; a rolling body provided on top of the
first support ring; and a second support ring which supports
the bottom of the cover part while surrounding the rolling
body, and rotates around the central structure.
Further, the rotator may be provided with a gear
member on an upper portion of the outer circumference of the
rotator, and the transmission may include: a power
connection gear coupled to the above gear member in the
rotator; a gear shift coupled to a motor shaft of the power
generator; and a power transmission shaft which connects the
power connection gear and the gear shift to transmit the
rotating force, wherein a rotational speed of the rotator
can be varied depending upon the number of teeth of both the
power connection gear and the gear shift.
Further, the rotator may include: a plurality of
rotary supports provided in a direction perpendicular to the
central structure; and at least one resistance plate
provided in the rotary support, one side of which is
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rotatably coupled to the rotary support by a hinge, wherein
the rotary support includes a support part, at one end of
which the resistance plate is rotatably coupled and by which
the resistance plate is supported, wherein the support part
may consist of at least one support part.
[Advantageous effects]
In accordance with the present invention as described
later discussed, there is provided a hydropower generator
that enables efficient management, control and lifespan
extension of facilities, and achieves installation cost
reduction.
According to the present invention, there is provided
a hydropower generator with advantages wherein the
resistance plate may be rotatably coupled to the support
part of the rotary support in diverse modes, and adjusting
the number of the rotary supports may further increase
resistance caused by fluid, facilitate rotation of the
rotator and further improve electric power generation.
[Description of Drawings]
FIG. 1 is a perspective view illustrating a
hydropower generator according to a preferred embodiment of
the present invention.
FIG. 2 is an exploded perspective view illustrating a
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hydropower generator according to a preferred embodiment of
the present invention.
FIG. 3 is a perspective view illustrating a
hydropower generator according to a preferred embodiment of
the present invention.
FIG. 4 is a cross-sectional view illustrating a
hydropower generator according to a preferred embodiment of
the present invention.
FIG. 5 is a perspective view illustrating a coupling
relationship between a rotary support and a resistance plate
in the hydropower generator according to a preferred
embodiment of the present invention.
FIG. 6 illustrates behavior of the rotary support and
the resistance plate according to a direction of fluid in
the present invention.
FIG. 7 illustrates behavior of a rotator according to
another embodiment in the rotary support of the present
invention.
FIG. 8 is a front view illustrating a resistance
plate according to another embodiment of the present
invention.
FIG. 9 illustrates a shape as viewed in direction "A"
in FIG. 8.
FIG. 10 is a perspective view illustrating the
resistance plate shown in FIG. 8.
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[Best Mode]
In order to accomplish the purposes of the present
invention, preferred embodiments of the present invention
provide a hydropower generator to generate electricity
while rotating in a flow direction of fluid, which
includes: a central structure installed to stand upright
in water; a rotator installed on an outer circumference of
the central structure and having at least one resistance
plate coupled to the outer circumference; a rotational
ring provided between the central structure and the
rotator to allow the rotator to rotate around the central
structure; a transmission which is coupled to the rotator
at one side of the transmission and integrally rotates
along with the rotator; and a generator having a motor
shaft coupled to the other side of the transmission to
generate energy by rotation of the motor shaft,
wherein the resistance plate is disposed in the
water and generates a resistance force along water flow
while rotating the rotator, simultaneously, thereby
generating energy from the generator, and wherein the
resistance plate is configured to be arranged to generate a
rotating force such that the rotator can rotate in the same
direction regardless of the direction of flow.
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[Preferred embodiments of Invention]
With reference to embodiments that are described
later in detail and in conjunction with the accompanying
drawings, methods of accomplishing the advantages and
features of the present invention will be apparent. However,
the invention is not limited to the embodiments set forth
herein and may be embodied in many different forms. The
present embodiments are provided only to complete the
disclosure of the present invention and inform one having
ordinary skill in the art of the concept and scope of the
invention, while the present invention will only be defined
by the appended claims. Like reference numerals refer to
like elements throughout the specification.
Hereinafter, the present invention will be described
in detail by means of the following embodiments of the
present invention with reference to the accompanying
drawings illustrating the hydropower generator.
FIG. 1 is a perspective view illustrating a
hydropower generator according to a preferred embodiment of
the present invention, FIG. 2 is an exploded perspective
view illustrating a hydropower generator according to a
preferred embodiment of the present invention, FIG. 3 is a
perspective view illustrating a hydropower generator
according to a preferred embodiment of the present invention,
and FIG. 4 is a cross-sectional view illustrating a
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hydropower generator according to a preferred embodiment of
the present invention.
First, the hydropower generator according to the
present invention generates electricity by rotation in a
flow direction of fluid.
Referring to FIGS. 1 to 4, the hydropower generator
of the present invention includes a central structure 110,
a rotator 120 and a rotational ring, a transmission 140
and a generator 150.
The central structure 110 is installed to stand
upright in water.
The central structure 110 may include a guide groove
111 inserted in an up-and-down direction to have an outer
circumference and a fixing groove 112 into which one side
of the guide groove 111 is inserted.
Herein, a width between both inner faces of the guide
groove 111 may increase with increasing insertion depth of
the guide groove.
Further, the hydropower generator of the present
invention may further include a fixing rod 170.
The fixing rod 170 is inserted into the guide groove
111 such that an upper ring coupled to the center of the
rotator 120 may be secured by inserting a protrusion 131
into the fixing groove 112.
Herein, a planar cross-sectional area of the fixing
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rod 170 is formed to correspond to a planar cross-
sectional area of the guide groove 111. Further, when the
fixing rod 170 is coupled to the guide groove 111, the
fixing rod can only move up and down since the width
between both inner faces of the guide groove 111 is
increased as the guide groove 111 is inserted more deeply.
Further, the fixing rod 170 serves to prevent an
internal rolling ring 130 coupled to the fixing rod 170
from not rotating while moving toward the guide groove 111.
Further, the hydropower generator of the present
invention may further include a base member 160.
The base member 160 is provided at a lower end of
the central structure 110 and supports the central
structure 110 to stand upright.
The rotator 120 is installed on an outer
circumference of the central structure 110, and at least
one resistance plate 190 is coupled to an outer
circumference of the rotator.
The rotator 120 includes a gear member 122 on an
upper portion of the outer circumference of the rotator.
The rotational ring is provided between the central
structure 110 and the rotator 120 to allow the rotator 120
to rotate around the central structure 110.
Herein, the rotational ring may include an internal
rolling ring 130, a lower rolling ring 135 and an upper
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rolling ring 235.
The internal rolling ring 130 may be provided
between an outer circumference of the central structure
110 and an inner circumference of the rotator 120 to
support the rotator 120.
In this regard, the internal rolling ring 130 may
move up and down by the protrusion 131 formed in the guide
groove 111 and may be inserted into and secured in the
fixing groove 112.
Further, the internal rolling ring 130 may include
an inner ring 132, a rolling body 133 and an outer ring
134.
The inner ring 132 may have the protrusion 131
projecting from an inner circumference thereof.
The rolling body 133 is mounted on the outer
circumference of the inner ring 132.
The outer ring 134 surrounds the rolling body 133,
and rotates around the central structure 110 while an
outer circumference of the outer ring 133 is in close
contact with the inner circumference of the rotator 120.
Herein, the inner rolling ring 130 may be provided
in one or more numbers, which is(are) preferably arranged
and spaced apart in a length direction of the central
structure 110.
That is, the inner ring 132 is inserted into and
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secured in the fixing groove by the fixing rod 170, while
the outer ring 134 is in close contact with the rotator
120 and then rotated.
Moreover, the inner rolling ring 130 has a
configuration of minimizing friction between the central
structure 110 and a rotating shaft, and may also be formed
in other different structures.
A base member 160 for supporting the rotator 120 and
the central structure 110 may be further included. Further,
the rotator 120 may have a hollow cylindrical shape
wherein a portion of the central structure 110 is accepted
in the rotator 120.
In addition, a cover part 211 having a thru-hole
through which the central structure 110 passes is formed
on top of the rotator 120, while the central structure 110
may have a stepped part 210 projecting in the radial
direction from the outer circumference of the central
structure 110 such that the central structure 110 is
spaced apart from the bottom of the cover part 211 of the
rotator 120.
Briefly, the rotator 120 has a hollow cylindrical
form having a thru-hole wherein a diameter of a lower
portion of the thru-hole is larger than a diameter of an
upper portion thereof, while a cover part 211 is formed
perpendicular to a center line on a position in the
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rotator, at which the diameter of the rotator is varied
from the larger one to the smaller one.
On the other hand, the central structure 110 has a
non-hollow cylindrical form, wherein a diameter of a lower
portion of the central structure is larger than a diameter
of an upper portion thereof, and has a stepped part 210
formed perpendicular to the center line on a position in
the central structure, at which the diameter of the
central structure is varied from the larger one to the
smaller one.
The rotational ring provided between the rotator 120
and the central structure 110 may include a plurality of
internal rolling rings 130 in a multilayer structure,
which are disposed between the inner circumference of the
rotator 120 and the outer circumference of the central
structure 110.
Therefore, the rotator 120 may be supported by the
internal rolling rings 130 so that the rotator 120 may
rotate with reference to a center axis of the central
structure 110.
Further, the rotational ring may include an upper
rolling ring 235 provided between the cover part 211 of
the rotator 120 and the stepped part 210 of the central
structure 110 in order to support the upper portion of the
rotator 120, and a lower rolling ring 135 provided between
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the base member 160 and the bottom of the rotator 120 in
order to support the lower portion of the rotator 120.
In this case, the upper rolling ring 235 and the
lower rolling ring 135 may be provided together or either
one thereof may be selectively provided.
Meanwhile, the upper rolling ring 235 may include a
first support ring 236, a rolling body 237 and a second
support ring 238.
The first support ring 236 is supported on the
stepped part 210 of the central structure 110.
The rolling body 237 is provided on top of the first
support ring 236.
The second support ring 238 surrounds the rolling
body 237, supports the cover part 211 of the rotator 120
and rotates around the central structure 110.
That is, the second support ring 238 has a rolling
motion by the rolling body 237 when pressed by a load of
the rotator 120, thereby minimizing friction with the
first support ring 236.
Accordingly, the rotator 120 is supported on the
lower rolling ring 235 and is rotated while minimizing
friction due to the load.
The lower rolling ring 135 is provided between the
base member 160 of the central structure 110 and the
bottom of the rotator 120 in order to support the rotator
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120.
The lower rolling ring 135 is coupled to the lower
portion of the central structure 110 in order to support
the bottom of the rotator 120.
In this case, the lower rolling ring 135 may include
a first support ring 136, a rolling body 137 and a second
support ring 138.
The first support ring 136 is supported on the base
member 160
The rolling body 137 is provided on the top of the
first support ring 136.
The second support ring 138 surrounds the rolling
body 137, supports the bottom of the rotator 120, and
rotates around the central structure 110.
That is, the second support ring 138 has a rolling
motion by the rolling body 137 when pressed by a load of
the rotator 120, thereby minimizing friction with the
first support ring 136.
Accordingly, the rotator 120 is supported on the
lower rolling ring 135 and is rotated while minimizing
friction due to the load.
Herein, since the upper rolling ring 235 and the
lower rolling ring 135 have substantially the same
configuration, the same terms are used for the first
support ring, the second support ring and the rotator.
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In this regard, the transmission 140 is coupled to
the rotator 120 at one side thereof and integrally rotates
with the rotator.
Herein, the transmission 140 may include a power
connection gear 142, a gear shift 144 and a power
transmission shaft 146.
The power connection gear 142 is coupled to a gear
member 122 formed on the outer circumference of the
rotator 120.
The gear shift 144 is coupled to a motor shaft 147
of a generator 150.
The power transmission shaft 146 connects the power
connection gear 142 and the gear shift 144 to transmit a
rotating force thereto.
That is, depending upon the number of teeth of the
power connection gear 142 and the gear shift 144, a
rotational speed of the rotator 120 can be varied.
In addition, the hydropower generator according to
the present invention may further include a rotary support
180 and a resistance plate 190.
The rotary support 180 is provided in a direction
perpendicular to the central structure 110 of the rotator
120.
In this regard, the rotary support 180 is preferably
provided in plural.
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At least one resistance plate 190 is provided on the
rotary support 180, wherein one side of the resistance
plate 190 is rotatably coupled to the rotary support 180
by a hinge (see FIG. 5a).
Herein, the rotary support 180 may include a support
part 182.
The resistance plate 190 is rotatably coupled to and
supported by an end of the support part 182.
In this case, the support part 182 is preferably
formed of at least one support part.
That is, the resistance plate 190 is disposed in
water to generate a resistance force along water flow and,
at the same time, the rotator 120 rotates to generate
electric energy from the generator 150.
FIG. 5 is a perspective view illustrating a coupling
relationship between the rotary support and the resistance
plate in the hydropower generator according to a preferred
embodiment of the present invention.
Referring to FIG. 5, the resistance plate 190
according to another embodiment of the present invention
will be described below.
First, the resistance plate 190 will be described
with reference to FIG. 5b.
The rotary support 180 is provided in a direction
perpendicular to the rotator 120.
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Herein, the rotary support 180 is preferably
provided in plural in a length direction of the rotator
120.
Further, the rotary support 180 includes a support
part 182.
The resistance plate 190 described below is
rotatably coupled to and supported by an end of support
part 182.
In this case, a pair of support parts 182 is
provided and spaced apart by a predetermined distance.
That is, the resistance plate 190 is rotatably coupled
between the pair of support parts 182.
Next, the resistance plate 190 will be described
with reference to FIG. 5c.
The rotary support 180 is provided in a direction
perpendicular to the rotator 120.
The rotary support 180 is preferably provided in
plural, in particular, a plurality of rotary supports 180
may be provided in a length direction of the rotary
supports 180. Further, the rotary supports 180 are
laminated one above another (that is, up and down),
optionally, a plurality of rotary supports 180 may be
provided.
The rotary support 180 may include a support part
182.
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The resistance plate 190 is rotatably coupled to and
supported by one end of the support part 182.
In this case, the support part 182 is preferably
formed of at least one support part.
Further, the support part 182 may include an upper
support part and a lower support part.
The upper support part and the lower support part
are formed on top and bottom, respectively, to oppose each
other.
Further, on the bottom of the upper support part and
on the top of the lower support part, that is, on both
surfaces of the upper and lower support parts facing each
other, rotational balls are provided.
Further, on both surfaces of the upper and lower
support parts facing each other, a stopper is projected
and formed.
Herein, the stopper is formed on both of the upper
support part and the lower support part, wherein the
stopper is inclined at an angle such that one side of the
resistance plate 190 described below is more inserted as
long as a constant angle (e) in the rotational direction
rather than the other side thereof.
Herein, the constant angle (0) preferably ranges
from 1 to 10 degrees, without being limited thereto.
Accordingly, when the resistance plate 190 is
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supported on the stopper, it is supported at an angle in a
direction of centrifugal force during rotation of the
rotator 120 and does not further rotate, thereby not being
folded or bent to the outside by the centrifugal force.
That is, the resistance plate 190 is formed on the
upper support part and the lower support part wherein one
side of the resistance plate 180 is inclined to be more
inserted by a constant angle (0) in the rotational
direction rather than the other side thereof so that the
resistance plate 190 can be stably supported on the
stopper, thereby preventing separation of the resistance
plate 190 from the stopper caused by the direction of flow
or the centrifugal force.
At least one resistance plate 190 is provided on the
rotary support 180 and may be provided in a length
direction or a vertical direction of the rotary support
180.
Further, the resistance plate 190 is formed in a
hollow shape on the other side opposite to a site of the
rotary support at which the fixing hole is formed, and has
an insertion part with an open side.
The resistance plate 190 may further include an
auxiliary resistance plate 192.
The auxiliary resistance plate 192 is inserted into
the resistance plate 190 through the insertion part and
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has a variable length projecting from one side of the
resistance plate 190.
Accordingly, with respect to the hydropower
generator of the present invention, the rotary support 180
may rotate by resistance of the resistance plate 190 to a
fluid, and the resistance plate 190 may maintain a
position owing to rotation of the rotator 120 without
being affected by a flow direction of the fluid and
generate resistance to thus induce generation of
electricity by movement of the fluid.
Further, with reference to FIGS. 8 to 10, FIG. 8 is
a front view illustrating the resistance plate according to
another embodiment of the present invention, FIG. 9
illustrates a shape as viewed in direction "A" in FIG. 8,
and FIG. 10 is a perspective view illustrating the
resistance plate shown in FIG. 8
As shown in FIG. 8 and later, the resistance plate
190 is formed of a curve (a) which increases in width with
increasing distance from the hinge.
That is, the surface of the resistance plate 190 has
upper and lower ends to form a curve (a) such that a width
of upper and lower parts becomes wider toward one side of
the resistance plate 190.
Further, the support part 182 is rotatably hinge-
coupled by arranging the hinge in the center of the
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resistance plate so that the resistance plate 190 is
rotatably coupled.
In this case, a hinge-coupled part 191 of the
resistance plate 190 is inserted into the rotary support
180 to attain hinge-coupling, and a hinge pin is fully
inserted into a coupling hole of the rotary support 180 to
thus form no protrusion.
Further, the hinge-coupled part 191 of the
resistance plate 190 as well as one end of the support
part 182 are rounded (R) in a curved form.
Therefore, since the upper and lower portions of the
resistance plate 190 form a curve (a), the support part
182 does not have any protrusion, and the hinge-coupled
part 191 of the resistance plate 190 as well as the rotary
support 180 are rounded (R), a net or other suspended
matters flowing in the fluid are not caught (or stuck) in
the support part 182 or the resistance plate 190, thereby
attaining electricity generation by smooth movement of the
fluid.
On the other hand, as shown in FIG. 9, when the
resistance plate 190 rotates and is superimposed on the
rotary support 180, the upper and lower portions of the
resistance plate 190 are formed in a bent shape toward the
center of the resistance plate so that a rear surface 190'
of the resistance plate in contact with the rotary support
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180 is formed to be convex while a front surface 190"
opposite to the rear surface 190' becomes concave.
That is, when the resistance plate 190 is arranged
to be superimposed on the rotary support 180, the front
surface 190" is concave to improve resistance of the
resistance plate 190.
Hereinafter, an arrangement of the resistance plate
capable of generating a rotating force in order to achieve
rotation in the same direction regardless of the direction
of flow will be described with reference to FIG. 6.
FIG. 6 illustrates an arrangement structure that
maximizes the rotating force because a resistance force of
the resistance plate is maximized at the right side when
the flow rate is directed from the bottom to the top.
That is, as shown in FIG. 6, the resistance plate
includes: a plurality of rotary supports 180 formed in
radial direction with respect to the rotator; and a
resistance plate 190 rotatably coupled to one side of the
rotary support, which is opposed to the rotator, by a
hinge, wherein the rotary support includes a support part
182 to which the resistance plate is rotatably coupled and
by which the resistance plate is supported.
Referring to FIG. 6, it could be seen that the
resistance plate 190 receives a force of the fluid and
generates a rotating force (a resistance force of the
CA 03031950 2019-01-24
resistance plate) to rotate the rotator, wherein an angle
for maximum rotating force (see the right side in FIG. 6)
is different from an input direction of the flow by 90
degrees.
In addition, it could be seen that an angle for
minimum rotating force (see the right side in FIG. 6) is
different from the angle for maximum rotating force by 180
degrees. In this case, it is identified that the
resistance plate 190 is arranged in a direction
perpendicular to the direction of flow at the angle for
maximum rotating force, whereas the resistance plate is
arranged parallel to the direction of flow at the angle
for minimum rotating force.
Again, referring to FIG. 6, the resistance plate 190
is rotatably coupled to one side of the rotary support 180
by a hinge to thus rotate according to a flow rate of
fluid, wherein the rotating resistance plate 190 is
arranged to be superimposed on the rotary support 180 at
an angle for maximum rotating force (see the right side in
FIG. 6) so that the rotary support is arranged parallel to
the resistance plate, whereas the rotating resistance
plate 190 is arranged to be spaced apart from the rotary
support 180 by 90 degrees at an angle for minimum rotating
force (see the left side in FIG. 6) so that the rotary
support is disposed at a right angle (see angle B) to the
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resistance plate.
Therefore, the rotator 120 rotates by the resistance
plate with the maximum rotating force generated as shown
in FIG. 6. Further, an angle between the resistance plate
and the rotary support may be varied while rotating the
rotary support and the resistance plate together by
rotation of the rotator. Briefly, the angle between the
rotary support and the resistance plate is 0 degrees at a
point at which the rotating force becomes maximum (see the
left side in FIG. 6) while the angle between the rotary
support and the resistance plate is 90 degrees at another
point at which the rotating force becomes minimum, wherein
this angle is varied in the range of 0 to 90 degrees.
In addition, when viewing the rotator 120 in the
direction of flow as shown in FIG. 6, if the resistance
plate and the rotary support are arranged to achieve the
maximum rotating force at the right side, the rotator
rotates in the counterclockwise direction. Conversely, if
the resistance plate and the rotary support are arranged
to achieve the maximum rotating force at the left side,
the rotator rotates in the clockwise direction. In this
regard, with respect to a difference in such arrangement,
when viewed in the direction of flow as shown in FIG. 6,
if the resistance plate is disposed at the front before
the rotary support at the right side, the rotator rotates
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in the counterclockwise direction. On the contrary, if the
resistant plate is disposed at the rear after the rotary
support, the rotator rotates in the clockwise direction.
Therefore, even when the flow direction of fluid is
changed to any direction, a rotational direction of the
rotator is not altered because of arrangement of the
resistance plate and the rotary support.
Moreover, FIG. 7 illustrates the behavior of a
rotator according to another embodiment in the rotary
support of the present invention.
As shown in FIG. 7, the rotary support 180 has a bent
part 183 bent by a predetermined angle (0) in a direction
opposite to the rotational direction of the rotator 120 when
the rotator rotates in the same direction.
That is, referring to FIG. 7, the rotator 120 rotates
to the left side as the counterclockwise direction, while
the bent part 183 of the rotary support 180 is bent in the
direction opposite to the rotational direction of the
rotator 120.
Accordingly, it is possible to prevent the resistance
plate 190 from rotating by centrifugal force of the rotary
support 180. In other words, even though the resistance
plate 190 may rotate due to the centrifugal force caused by
rotation of the rotator 120 in a condition wherein the
resistance plate 190 is superimposed on the rotary support
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180, such rotation may be prevented by the bent part 183
formed as described above.
One having ordinary skill in the art will appreciate
that the present invention may be embodied in other specific
forms without changing the technical spirit and/or essential
features of the invention. Therefore, the embodiments
described above should be understood as illustrative and
non-restrictive examples only. The scope of the present
invention is represented by the appended claims rather than
the foregoing description, and all modifications and/or
alternations derived from the meanings, ranges and
equivalent concepts of the claims are duly construed to be
within the scope of the present invention.
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